<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    
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<script>
    //1~100
    //0~1 包含0，但不包含1

    var r = Math.random();
    var result = parseInt(100*r + 1);
    console.log(result);
    
</script>
</html>